Emergent gravity means two things in this work. First it means equations
of gravity are emergent. It is more useful to call this emergent causality
as defined below. Second it means metric and matter emerge from some
fundamental degrees of freedom. In other words, unification of metric
and matter. There are other attempts at emergent gravity for example
using Bose-Einstein condensates [1]}, [2]},
entropic gravity [3]}, [4]}, [5]},
non-commutative geometry [6]}, [7]}, quantum
computation [8]}, matrix models [9]},
holographic models [10]}, [11]}, [12]}, [13]}
and many other models [14]}, [15]}, [16]}.
This work is different from all other models as this is the first
example of emergent causality.
